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Unread 01-16-2010, 09:46 PM   #1
RanTJWJ
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coolant low...but its not low

I just bought a 2002 wj reading low coolant on the ceiling center council. Anyone had this and is it just a a "gooped up" sensor or do i need to replace it.

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Unread 01-16-2010, 09:48 PM   #2
WiCkeDuDe
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Had the same problem on a 99. Replaced the sensor and its been fine. Was only about $10 at the dealer.
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Unread 01-16-2010, 09:51 PM   #3
RanTJWJ
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what do i have to do?
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Unread 01-16-2010, 10:05 PM   #4
Howiedooit
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I think the sensor is in the reservour, they read low when there is no fluid between the contacts of the sensor, so a gooped up sensor is less likely then a loose wire at the sensor, or a loose plug to the sensor. make sure the tank is full, then check the system behind the sensor by connecting the two wires by what ever means you want.. paper clip.. jump wire.. the light should go out narrowing it down to the sensor, check the sensor with a continuity testor, continuity when full, no continuity when empty. good luck
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Unread 01-16-2010, 10:14 PM   #5
ZJJay
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There was a thread a while back about this same problem. After testing the sender and the wiring, a member deterined the problem was with a bad solder connection on the back of the Vehicle Information Center (a display in the lower center console of a ZJ).

I was having this same problem. My sender tested good, but I decided to replace it anyway. After that I've had the warning message and chimes only once. It hasn't reoccurred in the past four months. I'll wait until it becomes a problem again before I remove the VIC and resolder the connections.
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Unread 01-16-2010, 10:17 PM   #6
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Originally Posted by Howiedooit View Post
I think the sensor is in the reservour, they read low when there is no fluid between the contacts of the sensor, so a gooped up sensor is less likely then a loose wire at the sensor, or a loose plug to the sensor. make sure the tank is full, then check the system behind the sensor by connecting the two wires by what ever means you want.. paper clip.. jump wire.. the light should go out narrowing it down to the sensor, check the sensor with a continuity testor, continuity when full, no continuity when empty. good luck

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Unread 01-16-2010, 10:35 PM   #7
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Unread 01-16-2010, 10:57 PM   #8
RanTJWJ
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thanks everyone for the help. jf coming through yet again.
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Unread 01-16-2010, 11:21 PM   #9
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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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